Improvement in ships  windlasses



G. H. REMINGTON, B. D. THAYEB &1 P. M ANTONt Ships Windlasses.

N0.144,227.' Patented Nov.4,1873.i

NITED STATES PATENT OFFICE.

GEORGE H. REMINGTON, BARTON D. THAYER, AND JOSEPH P. MANTON, OF PROVIDENCE, 'BHODE ISLAND.

IMPROVEMENT IN SHlPS WINDLASSE$.

Specification forming part of Letters Patent No. 144,227, dated November 4, 1873; application filed June 27, 1873.

To all whom it may concern:

Be it known that we, GEORGE H. REMING- TON, BARTON D. THAYER, and Josnrn P. MANTON, all of the city and county of Providence, in the State of Ithode Island, have invented certain new and useful Improvements in Ships Windlasses; and we do hereby declare that the following specification, taken in connection with the drawings making a part of the same, is a full, clear, and exact description thereof.

Figure 1 is a front elevation. Figs. 2 and 3 are, respectively, views in vertical and horizontal section, showing the pawl-and-ratchet gear nipping arrangement for working the windlass. Figs. 4: and 5 are corresponding views of the same parts of a Windlass when a friction-pawl is used. Figs. 6 and 7 are detailed parts to be referred to.

Our invention resides in a novel arrange ment of the operative parts of a Windlass, whereby a single wheel located between the wildeats serves, with suitable pawls, as a pawl-gear to hold the Windlass from paying out chain, and also, with suitable ratchets and pawls, or equivalent frietion-nippers, furnishes the means for heaving in the chain. The improvement greatly reduces the width required between the bits for the accommodation of the Windlass, and permits the location of the pump-brakes for working the windlass to be abaft, instead of forward, of the its.

In the drawings, A is the deck of the vessel; B B, the bits; 0 O, the Wildcats or chaingears; D D, the frictionstraps, drums, and levers; and E, the Windlass-shaft, all of usual construction. F is a wheel keyed to the shaft of the Windlass. Its periphery is provided with ratchet-teeth It, with which stoppers a,

hinged to a deck-stanchion, G, forward of such wheel, can engage to prevent the windlass from turning in the direction opposite to that in which it is being worked in heaving in the chain. A double flange (shown clearly at b b, Figs. 3 and 5) is formed on both faces of the wheel F, constituting raised rims. These flanges are embraced by sliding blocks I, which are furnished with concentric guides c 0, fitting the flanges. These blocks are operated through the hinged links at d by the pumpbrakes J, and said blocks are provided with ratchet-pawls K, or equivalent friction-pawls K, Figs. 2 and 4. In case ratchet-pawls are used, the faces of the wheel should be furnished with ratchet-teeth R, as seen at Fig. 7, and the links cl are connected with the sliding blocks I, Fig. 2. If friction-pawls are used, the said links are connected directly to the pawls K, as shown at Figs. 4, and such pawls are pivoted at e to their blocks. The pump-brakes J enter sockets in a vibrating headpiece. WVith this head-piece two slotted sectors, h h, are combined, and the ends of the links d d are attached thereto by clampbolts and nuts ff, and the said sector being of a curvature due to a circle, of which the links d d are radiuses, it follows that the position of the sliding blocks I will always remain the same for all variations in the length of the stroke.

lVhat we claim as our invention, and desire to secure by Letters Patent, is-

1. In combination with a Windlass-shaft for working the same, the singlawheel F, and ratchet or friction pawls K K applied to the sides thereof, substantially as described.

2. The wheel F, constructed with ratchetteeth It on its periphery for a pawl-gear and double-flanged rims b b, in combination with sliding blocks I and ratchet or friction pawls K K, substantially as described.

3. The combination of a Windlass-pump brake-head, L, constructed with slotted sectors h h, with the sliding blocks I, and links (I d for maintaining the proper position of the pawl or ratchet gear for all variations of the length of .the stroke, substantially as described.

GEO. H. REMINGTON. BARTON D. THAYER. JOSEPH P. MANTON. Witnesses:

SAMUEL AMES, J OHN, D. THURsToN. 

